Finite element analysis of a piezoelectric acoustic levitator

Author

Andrade, Marco A B ; Buiochi, Flávio ; Adamowski, Julio C.

Author_Institution

Dept. of Mechatron. Eng., Escola Politec. da Univ. de Sao Paulo, Sao Paulo

fYear

2008

fDate

2-5 Nov. 2008

Firstpage

1413

Lastpage

1416

Abstract

This work describes the finite element analysis of a piezoelectric acoustic levitator. The acoustic levitator consists of a Langevin transducer and a steel reflector. The finite element method is used to determine the electrical impedance, the transducer face displacement and the acoustic radiation potential that acts on a small sphere. The numerical electrical impedance is compared with that obtained experimentally by an impedance analyzer and the numerical displacement is compared with that obtained by a fiber-optic vibration sensor. The levitator was used to levitate small Styrofoam spheres. The positions of the spheres show good agreement with the positions of minimum acoustic radiation potential.

Keywords

acoustic transducers; electric impedance; finite element analysis; piezoelectric transducers; Langevin transducer; Styrofoam spheres; acoustic radiation potential; electrical impedance determination; finite element analysis; impedance analyzer; piezoelectric acoustic levitator; steel reflector; Acoustic applications; Acoustic transducers; Finite element methods; Impedance; Levitation; Numerical models; Piezoelectric materials; Piezoelectric transducers; Steel; Ultrasonic transducers; Finite Element Analysis; acoustic levitation; piezoelectric transducer;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2008. IUS 2008. IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4244-2428-3

Electronic_ISBN

978-1-4244-2480-1

Type

conf

DOI

10.1109/ULTSYM.2008.0343

Filename

4803339